1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4scm_version() 5{ 6 # Check for git and a git repo. 7 if test -z "$(git rev-parse --show-cdup 2>/dev/null)" && 8 head="$(git rev-parse --verify HEAD 2>/dev/null)"; then 9 # If we are at a tagged commit, we ignore it. 10 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then 11 # Add -g and 8 hex chars. 12 printf -- '-g%.8s' "$head" 13 fi 14 # Check for uncommitted changes. 15 # This script must avoid any write attempt to the source tree, 16 # which might be read-only. 17 # You cannot use 'git describe --dirty' because it tries to 18 # create .git/index.lock . 19 # First, with git-status, but --no-optional-locks is only 20 # supported in git >= 2.14, so fall back to git-diff-index if 21 # it fails. Note that git-diff-index does not refresh the 22 # index, so it may give misleading results. See 23 # git-update-index(1), git-diff-index(1), and git-status(1). 24 if { 25 git --no-optional-locks status -uno --porcelain 2>/dev/null || 26 git diff-index --name-only HEAD 27 } | read dummy; then 28 printf '%s' -dirty 29 fi 30 fi 31} 32 33if [ -n "$EROFS_UTILS_VERSION" ]; then 34 echo "$EROFS_UTILS_VERSION" 35else 36 echo $(head -n1 VERSION)$(scm_version) 37fi 38